MOF-Derived Hetero-Zn/Co Hollow Core-Shell TMOs as Anode for Lithium-Ion Batteries

In this work, metal–organic frameworks (MOFs) were used as precursors to prepare Zn/Co oxide with a porous dodecahedral core-shell structure. Herein, low-temperature self-assembly calcination and hydrothermal strategy of imidazole-based Zn-Co-MOF was used. As anode lithium-ion batteries (LIBs), ZnO/Co3O4 has good cycling stability, the specific discharge capacity is stable at about 640 mAh g?1 after 200 cycles, its coulombic efficiency (CE) above 95% first 20 cycles. When current density 0.6 A/g, 420 g?1. This excellent electrochemical performance attributed unique hollow structure heterojunction electrode interface, which improves Li+ storage capacity, increases contact area between electrolyte, overall activity. addition, synergistic effect ZnO Co3O4 also plays an important role in improving performance.